On simplifying 7+[12-{8+3-(9×6-13×4+1)}]
A7. b-7. c11. d34
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correct option is c that is 11
=7+[12-{8+3-(9×6-13×4+1)}]
=7+[12-{8+3-(3}]
=7+[12-8]
=7+4
=11
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